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Maman Mansyur Idris
Pusat Penelitian dan Pengembangan Hasil Hutan
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Journal : Jurnal Penelitian Hasil Hutan

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PENERAPAN SISTEM MEKANISASI DALAM KEGIATAN PENEBANGAN JATI UNTUK MENGURANGI KETERGANTUNGAN TERBATASNYA PENYEDIAAN TENAGA BLANDONG DI JAWA Maman Mansyur Idris; Soenarno Soenarno
Jurnal Penelitian Hasil Hutan Vol 6, No 8 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4878.103 KB) | DOI: 10.20886/jphh.1990.6.8.476 - 481

Abstract

Sastrodimedjo, (1975) pointed out that the present trend of wood processing  industry development and formal education of younger  generation  caused some problems,  especially in the sustainabiliy  of forest  worker supply  in Java.Based on this  consideration  an  alternatif   for  most  widely  applied  felling  system,   i.e.  manual  felling  system, needs to  be sought. With  regard to this problem a study  was conducted at three Sub Forest District (RPH), namely Temenggeng, Pasar Sore and Sumberogo in Central Java to compare  3 (three)   felling  systems  in teak forest.The result  of  the  study  revealed  that  the  teak  felling  productivity  averages on 2 years gilrded  teak with  mechanical, manual  and  combination systems applied to flat  terrain  were 2.5359 m3/hour,  0.7128  m3/hour and  0.8186 m3/hour, respectively. But   those on hilly terrain were 1.5540 m3/hour, 0.7374 m3/hour and 0.796 m3/hour,   respectively.   The average cost  of  full  mechanical  felling  system applied to flat  terrain  was Rp 1,586.23/m3,  while  that  of on  hilly  terrain was Rp 2,l  65.93/m3
PERBAIKAN BEBAN KERJA KERJANTARA DALAM KEGIATAN PENEBANGAN SECARA MEKANIS MELALUI PENERAPAN PRINSIP ERGONOMI Soenarno Soenarno; Maman Mansyur Idris
Jurnal Penelitian Hasil Hutan Vol 7, No 1 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1990.7.1.17 - 24

Abstract

Tree felling  operations in  Indonesia are commonly  done by  standing or bending  workers,  using chain saws.  These techniques cause  high  stump residues  (about  8.94%)  and  increase  workers' energy  consumption by 12% for standing and 55% for bending  workers' positions.From ergonomics point of  view, above techniques cause  body position to be less natural,  produce longer static muscular work,  reduce  work hours, create early fatique  and physiological effect  like work stress.This  paper described  the  effect of  improved felling method on work  stress of  chain saw  operators  and  construction wood production.  An investigation was carried out in two private forest companies in Central Kalimantan  in 1988. The results are as the following:The  improved  felling  method decreases  work  stress  of  chain  saw  operators;  showed   by the reduction  of pulse  rate to the amount  of 13-15 beats/minute.                                                                          The  improved  method  of felling  trees with  buttress  heights  of  < 50 cm and 50-150    cm cause the increase in construction  wood products  about  0.354  m3 and 0.542 m3  per  tree felled,  respectively.
PENGARUH PEMBUANGAN BANIR DALAM PENEBANGAN POHON TERHADAP EFISIENSI PEMUNGUTAN KAYU (Study kasus di suatu perusahaan hutan di Kalimantan Barat) Sona Suhartana; Maman Mansyur Idris
Jurnal Penelitian Hasil Hutan Vol 13, No 1 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1995.13.1.19-26

Abstract

This paper presents  the results  of the study  of  the  impact of buttress cutting in tree felling on harvestring efficiency.  The case study was carried  out in PT Kurnia   Kapuas Plywood in West Kalimantan in  1994.  771e aim of the  study is to know the influence of buttress cutting on wood haversting efficiency.the  data were analysed by using  the I-test.the result of study shows that average of wood harvesting efficiency by cullting buttress is 68.1 % and without cutting buttress is 66.7 %
PENYAKIT PEKERJA DALAM KEGIATAN EKSPLOITASI HUTAN DI KALIMANTAN TENGAH Soenarno Soenarno; Maman Mansyur Idris
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1988.5.7.425-429

Abstract

Working conditions in  tropical  forests especially  in logging. are generally  difficult.  The  materials  handled  are heavy, outdoor weather  conditions  are unpredicted. the growth  of  vegetation are commonly dense, and temperature and humidity are mostly high.  These  conditions.    together with  inappropriate   workers'   facilities  and   nutrient  will  lead to  bad health conditions   and  occurence  of  various illnesses.An  investigation   carried  out  in  two  logging  companies in Central Kalimantan   revealed  that  there  are 8  kinds  of illnesses  that   are  commonly  suffered  by  workers,   i.e  :   influenza,   malaria, irritation of respiratory systems,  feeling  of nausea, back and neck problems,   headache/giddiness,  sore eyes,  and skin  disease.  The  highest  risk  of  having  illness is for those  working  in  transportation operations,  followed   by  felling,  skidding  and  workshop.   It  is also found   that  the  least risk is timber  cruising activity. 
PENGARUH FREKUENSI MAKAN TERHADAP JAM KERJA PENEBANG JATI DI KPH JOMBANG Maman Mansyur Idris; Sona Suhartana
Jurnal Penelitian Hasil Hutan Vol 4, No 3 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1987.4.3.17-20

Abstract

One of heavy work in the forestry activity in Indonesia  is manual  tree felling  of the teak.  This work needs much physical  labor.  Grandjean (1982) states that an extreem  physical  exertion  needs energy about  4,500 kcal/day.In order to continue  teak production it is needed to improve welfare of  the laborer by giving a better nutrition.A study  was conducted  to evaluate the effect of calorie intake on the performance  of the laborer and data were analyzed by using tabulation. The result showed that eating frequency are highly significant for teak tree fellers productive  working hour, age group of  18-40 years  with their average productive  working hours were 5 hours, 9 minutes and 29 seconds for  two times eating  frequencies.  Further  the average of 6 hours, 21 minutes and 41 seconds for  three times eating  frequencies,  and for age group 40 years up were 4 hours, 37 minutes and 25 seconds for  two times eating frequencies  and 5 hours,  10 minutes  and 36 seconds for  three times eating frequencies 
TINGKAT KEBISINGAN DI INDUSTRI PENGGERGAJIAN KAYU STUDI KASUS DUA PENGGERGAJIAN KAYU DI KALIMANTAN SELATAN Soenarno Soenarno; Maman Mansyur Idris
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1988.5.7.413-416

Abstract

Wood processing  in Indonesia, especially  sawmilling  industries  have  been  increased  in the  last decade. Until 1985, about  295  sawmilling  industries   with  the production capacity  of  more  than 8,500,000 m3/year  have been installed.  These industries  have contributed   to  Indonesian   foreign  exchange  of  US$ 1,800.37  million.  In their  operations the problem of ergonomics,  such  as high noise   levels  has not  considered  yet.An   investigation  was conducted in  two  saw milling industries  in South Kalimantan   with  the  results  as follows   :Noise  level  in  the  second   industry   was  varied  from 96  to  102  dB(A),   and  in  the first  industry   was ranged from 92 to 94  dB(A).   This  difference   is due  to differences   in the  machine  lay out  and  working  space design.  Both  levels are higher than  the maximum   tolerable  noise level of 85 dB(A).Noise protection  means for workers  in the first industry  are not  required  for the time  being,  but  in  the second  industry they  are strongly  recommended. 
PENGARUH PENYARADAN KAYU DENGAN TRAKTOR RANTAI KELABANG TERHADAP KERUSAKAN TEGAKAN TINGGAL Maman Mansyur Idris; Yahya Fakuara; Gunarwan Suratmo; Rahardjo S Suparto
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1988.5.7.404-409

Abstract

The  study   of  the  effect  of  log skidding  on  the  damage  of  residual stand  was carried out in one  logging company in West Kalimantan   in  1986.   The  meaning  of  residual stand  in the  study  are trees with diameter  20 cm and up.  The result of the study   shows  that  the  average damage  of  residual stand  is 18% per  hectare,  not  included  the damage  caused  by felling i.e.  15%  per  hectare.  According   lo  Indonesian   Selective  Cutting  System,  the  residual stand  is good  enough  to  fulfill  the sustained  yield  condition, that  is keep  at  least 25  core  trees  to  be left  per hectare. The role of skidded   trees number and stand  density  was significant  effect   on  the  residual stand  damage.
LIMBAH KAYU AKIBAT PEMBUATAN JALAN HUTAN DAN TEBANG BAYANG PADA ENAM HAK PENGUSAHAAN HUTAN DI KALIMANTAN TIMUR (Wood waste caused by forest road construction and shadow cutting at six logging companies in East Kalimantan) Maman Mansyur Idris; Sona Suhartana
Jurnal Penelitian Hasil Hutan Vol 14, No 1 (1996): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1996.14.1.7 – 15

Abstract

This paper  present   the  results  of  the  study  on  logging  waste  caused  by forest   road construction and  shadow  cutting.  The  study  carried  out at  six  logging  companies  in East Kalimantan in 1990.The aim  of  the  study  are  :    (1)  to  determine  the  wood  waste  caused  by forest  road construction  and shadow cutting,  (2) to find the factors  influencing the wood waste and (3) to find the way of reducing the wood waste.The results  of this study  shows  that the average wood waste from trees felled caused by forest road construction  and shadow cutting is 1.16  m3/ha for  commercial wood species and 2. 76 m3/ha  for non-commercial  wood species.Keywords :  wood waste, forest road,  shadow cutting
STUDI PERBAIKAN CARA PENYADAPAN KOPAL DI KPH SUKABUMI Soenarno Soenarno; Maman Mansyur Idris; Zakaria Basari
Jurnal Penelitian Hasil Hutan Vol 1, No 3 (1984): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1984.1.3.34-38

Abstract

Copal from Agathis tree has been one of  important  forest  products, not only as export commodity but also as raw material for some induatries. In the last few years however production  in  this country  began to decrease, due to inefficient  tapping by the forest worker.Because of  this reason a study on the tapping procedure is necessary. Thia report deals with a preliminary study on  the present  “quarre”  type  of  tapping procedure commonly  adopted  by the forest  worker. The locality chosen was Gede Barat Sub forest district at Sukabumi, West Java.Three factors were chosen  for the tapping study, namely the effect  on of resin productivity  of the location of the wound with respect to west and east direction (factor A), time of tapping (factor B) and type of wound covering (factor C).  The result of this study show that :Covering of tap wound does not cause incoveniences   to the worker.Resin productivity is not significantly affected by the wound location.The highest production of the resin per tree comes from the wound cut in the morning and covered with black coloured polyethelene sheet.       
KONDISI RUANGAN KERJA PADA TIGA PABRIK KAYU LAPIS DI SUMATRA SELATAN Maman Mansyur Idris; Sona Suhartana
Jurnal Penelitian Hasil Hutan Vol 5, No 5 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1988.5.5.269-274

Abstract

 An investigation   on   working   conditions   of  three  plywood  factories  in  South   Sumatra   was conducted in 1987; The  objective is to find  out  the  workers judgement   about   their  working  conditions in  terms  of  conveniences.The   total  of  265   respondents   from  plywood  factories employed  in  the  processing  steps  of  wood  preparation, peeling,  reeling, unreeling, veneer  drying, veneer  preparation,   gluing,  pressing, finishing, quality  control, packaging, workshops and laboratories were interviewed.The  results showed that  in  each processing  step, more  than  60%  respondents  felt their  working space conditions were  far  from being convenient   due  to  inappropriate   air circulation, dust, bad  smell noise, and  vibration. 
Co-Authors Gunarwan Suratmo Rahardjo S Suparto Soenarno Soenarno Sona Suhartana Wesman Endom Yahya Fakuara Zakaria Basari